cilium-gateway

cilium-gateway is a skill for Claude Code, Codex from Aidas-dev/k8s-agent-skills. It costs 60 tokens per session (2,029 once invoked), scanned A, original, MIT.

A guide for using Cilium’s Gateway API to route incoming network traffic to services in Kubernetes. Kubernetes is a system for running and managing containerized applications.

In plain words
What is it for?
Use it to create gateways and HTTP, gRPC, or TLS routes, configure certificates and redirects, split traffic, connect authentication or DNS tools, and troubleshoot listener status.
Why use it?
It helps configure common web entry points and diagnose Cilium Gateway controller issues without relying on ad hoc ingress settings.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to create gateways and HTTP, gRPC, or TLS routes, configure certificates and redirects, split traffic, connect authentication or DNS tools, and troubleshoot listener status.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aidas-dev/k8s-agent-skills/cilium-gateway
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Aidas-dev/k8s-agent-skills --skill cilium-gateway
Clone the repo
git clone --depth 1 https://github.com/Aidas-dev/k8s-agent-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cilium-gateway

README.md
[![agentmods](https://agentmods.dev/badge/skills/aidas-dev/k8s-agent-skills/cilium-gateway/github.svg)](https://agentmods.dev/skills/aidas-dev/k8s-agent-skills/cilium-gateway)
Your own site
<a href="https://agentmods.dev/skills/aidas-dev/k8s-agent-skills/cilium-gateway"><img src="https://agentmods.dev/badge/skills/aidas-dev/k8s-agent-skills/cilium-gateway/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cilium-gateway

Your own site · 80×15
<a href="https://agentmods.dev/skills/aidas-dev/k8s-agent-skills/cilium-gateway"><img src="https://agentmods.dev/badge/skills/aidas-dev/k8s-agent-skills/cilium-gateway.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,029 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00060 $0.02029
Opus 5 $0.00030 $0.01014
Sonnet 5 $0.00012 $0.00406
Haiku 4.5 $0.00006 $0.00203

Measured 10d ago against content hash ff92e868d723, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

cilium-gateway scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/cilium-gateway/SKILL.md · 284 lines

How it starts

The opening of the file, as written. The whole thing — 284 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cilium Gateway

Cilium v1.19.4 — Gateway API implementation for ingress traffic via per-node Envoy.

Overview

Cilium implements Gateway API v1.4.1 using per-node Envoy proxies with eBPF TPROXY interception. Supports GatewayClass, Gateway, HTTPRoute, GRPCRoute, TLSRoute, and ReferenceGrant. Host network mode exposes listeners directly on node IPs without a LoadBalancer Service. TLS termination, traffic splitting, and header modification all handled in Envoy.

CRDs Used

Gateway API (standard)

CRD Version Purpose
GatewayClass gateway.networking.k8s.io/v1 Class reference (parametersRef → CiliumGatewayClassConfig)
Gateway gateway.networking.k8s.io/v1 Shared LB listener — hostname, TLS, ports
HTTPRoute gateway.networking.k8s.io/v1 HTTP route rules — matches, filters, backends
GRPCRoute gateway.networking.k8s.io/v1 gRPC route rules
TLSRoute gateway.networking.k8s.io/v1alpha2 TLS passthrough routing by SNI (experimental)
ReferenceGrant gateway.networking.k8s.io/v1beta1 Allow cross-namespace references (Secret, Service)

Cilium-specific

CRD Version Purpose
CiliumGatewayClassConfig cilium.io/v2alpha1 Cilium-specific GatewayClass parameters (envoy config, LB type, etc.)
CiliumEnvoyConfig cilium.io/v2 Low-level Envoy config (used internally by Gateway controller)

Architecture

Internet → LB IP → any node → eBPF TPROXY → per-node Envoy → identity "ingress" → backend pod
  • Traffic arrives at any node, eBPF intercepts via TPROXY using ingress identity
  • Per-node Envoy (DaemonSet or cilium-agent embedded) handles L7
  • Two policy enforcement points: world → ingress and ingress → backend
  • Source IP preserved in X-Forwarded-For and X-Envoy-External-Address headers

Prerequisites

# Helm values needed
kubeProxyReplacement: true
gatewayAPI:
  enabled: true

Gateway API v1.4.1 CRDs must be pre-installed:

kubectl apply -f https://raw.githubusercontent.com/kubernetes-sigs/gateway-api/v1.4.1/config/crd/standard/gateway.networking.k8s.io_*.yaml

Read the full file on GitHub · 284 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 284 lines · 60 tokens per session scan A ff92e868d723

Subscribe to this mod's changes

cilium-gateway is a skill published in the GitHub repository Aidas-dev/k8s-agent-skills (2 stars, last pushed 27d ago), licensed MIT. It adds 60 tokens to every session and 2,029 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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